First of all, it bothered me that they called weeks after booking to inform me about the cats, leaving no "paper trail" on airbnb's messaging platform. I told them I had allowed this once before but only if they agreed to pay for professional cleaning costs in advance. They agreed no problem, yeah right! After called 3 cleaning places I learned the price would be 250-300. I will message them this news later today. These guests are young, 2 single guys and a couple who look to be in their 20's. They're all staying here to set up medicare support temp offices in the 4 walmarts nearest me for 62 days. Honestly I need this booking, the season for tourists here is May-August. After that I have managed to get a few traveling professionals over the years but it's slow. Should I go ahead and add the fee now? I doubt there's anyone else who'd allow 2 cats to stay inside unsupervised all day M-F for 2 months. On the other hand, the last thing I want is for cats to spray in my place or leave a stinky mess that I am stuck with! Thanks for your opinions.